QNAP UK Advanced Replacement Service (ARS) is an optional service to accelerate hardware replacement. QNAP products are designed and manufactured with high quality components to provide excellent reliability. For additional protection, QNAP offers an advanced replacement plan for customers who want to minimize the amount of time without a QNAP unit when seeking service. With ARS in place, QNAP will ship you a replacement unit in advance of you having to send to QNAP your existing NAS. Our advanced replacement plan is a great option for any customer seeking to minimise downtime.